System and method for correcting offsets in an analog receiver front end

摘要

A method corrects an input DC offset signal generated in front-end analog signal processing circuitry in a transceiver capable of operating in a high frequency local area network. An output signal from the front-end analog signal processing circuitry of the transceiver is received in a DC offset correction controller. A DC offset signal component in the output signal from the front-end analog signal processing circuitry due to an accrued DC offset is detected. A DC offset correction signal is sent from the DC offset correction controller to an adjustable biasing circuit coupled to a differential amplifier of a receiver line driver of the transceiver to modify the DC offset signal component.